Help IDing a little tiny coin***UPDATED***
 

I found this coin this past weekend . It was 8"+ deep & hit at 21 on the Nox . It's not a dime . It has a Roman numeral 1 in the center . After looking at US coins smaller than a dime , I'm pretty sure it's a foreign coin . I looked at Mexican coins next since I'm only 350 miles from the Mexican border & at one time Arizona was part of the Mexican territories . I found that a 1883 Mexican One Centavo had a Roman numeral in the center and was slightly smaller than a dime . I checked the diameter and it was right on the money . I'd like to clean it to try & get some more details but I'm a little apprehensive in doing so . Any thoughts on cleaning it & How ?
***UPDATED PHOTOS IN THE COMMENTS . POSITIVE ID***

Look for tooth picking methods on YouTube. Don't use any water or chemicals. In short, super dry, tooth pick dirt off nice and slow. Good luck!

Positive id/new pics
 

As was suggested by EmuDetector , I went to work with a tooth pick and managed to get enough details to ID the coin . It's actually a Arizona tax token . They were minted between 1937 - 1942 . A cool find but not 1883 Mexican coin cool :heartylaugh:

Still a pretty cool find! Nice work on the clean up :)

Awesome clean up, looks good!

Thank you GS ! The post hunt research & cleanup are almost as enjoyable as the hunts themselves . HH :mder:

Thank you !

Curious why? Thanks

I had several old coins, that even though they sat in wet ground, adding water made them turn black and I could never remove it. Your tap water also contains a bunch of chemicals and minerals too. On several bad coins I have I tried a bunch of popular methods and dry with picks always was the best.